Regenerative gas-furnace.



G. E. BENJAMIN. REOBNEBATWB OAS FURNACE. nunon-xox mnu nrc. u. mi. Unep ano. c. uw.

Patented Feb. 8, 1910.

mvfmun mi. BENJAMIN.

HEGENERATIVE UAS FURNACE.

:el PHHAHUK lHElJ DEC. I9. HOF". REBEWED 011026.10159. 948,538. Patented Feb.s,191n

3 SHEETS-BELL? 2 0. H. BENJAMIN.

nxzonnnnnrvx: ma rumucx.

mamon mnu una. n. ma.

nl nwsn unc. c. lona.

Patented Feb. 8. 1910.

3 Il ZEER-*83111* 9 l r. u z.. .n....vJ I.' r ....r.....

4 INVENYOR GEORGE BILLARD BENJAMIN, 0F NEW YORK, N. Y.

IIOINMTIVI llUlNAOE.

lpeetleatlea et Lettera raient.

imn-.niea Fai. s. ioio.

Anlteatlea lied Deaeaiber II, im, lerlal le. MIJN. leaewea member l. lm. lerlal le. 1....

'l'u ull whom il muy concern:

lic it known thiit I, Genitori llinoaiiu Bril- JAMiN, ii citizen of the United States, residing in tho city, county, und State of New York, hoi-o invnntod certiiin new and uifcful improvements in Re enerative Gas-Euriiaceii, of which the allowing ia a apecication.

My invention relates to i furnace of the type described in Letters Patent No. 827,498, granted to ine on the 31st day of J uly, 1906, and cona'iata in thc iiieana employed, whereby a very high tciiipi-.riiture ma be created and uniformly maintained wit in the furnace structure and at a much smaller expenditure of fuel than haa heretofore been conaidered possible. l

The accompanying drawin will eerve to illustrate my invention, in w ich- Figure l ia a plan view of the furniico structure, with regenerative chambera pumpe, pipes, etc., Fi 2 ia an elevation and v eitical ncction, lookin from the right on lino 2, 2, of Fig. 1 Fig. on line 3, 8, of 1, looking from' the bottom of the sheet, i .-4 ia avertical aoction on the line 4, 4, of ig. 1, looking from the bottom of the sheet, and Fig. 6 ui a vertical section of a modified form of furnace chamber, tiilien at ri ht angler to the aection aliown in Fig. 2, an ahowingthe bottom of the furnace iu the loweat position, alao the device for moving the carriage or. aadof! of the furnace bottom. y.

Referring to the drawings: 5 indicatee the furnace. The furnace consista aubatan tially of a top portion 6, aide portion 7, and a bottom portion 8. The top and aldea are rtially cloeed to the atmosphere, in order hat the furnace chamber may be maintained full of dame. The bottom portion l ia vertically movable bymeana of the hydraulic platen D and ma? alle be rotated throuih ha inatrumental ty of the power ahafta 0 and 11 and the inter paire of geara 12, 18. The particular construction of the furiiaca co'naidered apart from the heating apmtua formano part of my preaent inven Fig. 6 a modied forni of the furnace ia own. The forni ahown in Fig. 2 ia that of an o -furnace, while the form shown in Fig. il that of a mule furnace.

Surroundin the exterior of the furnace are two fuel nea 14, 16.. Theagi u'el are illustrated iiii formed of iron pipe. i'lhey vertical i ia a vertical aection muy, if desired, bo formed within the 'alla of tno .furnace chamber. These duca arev provided with ports or burner openinga 16,

17. In Fig. l, I hnvc shown three burner 69 To conve" uway tho products 0f oollilmltion from t i: furnace, an exit Bue 18 il provided. This ilue communicates with peira of the regcncriitoini 20, itl, or 29, 93, al the ou rnay be. The products of oolnbudion ing through the regeneratora are can by the atack 19.

20, 22,'are ne regeneratora, 21, 28, air regenera tora. .ach of these regeneratora oonsiata of a checker-work 24 and a aeriea of pes 25. 'Ihe pipes cate nt t cir lower onda with chamber 90 and at their upper ende with chamber! 91.

The chamber 26 of the regenerator 20 il connected through n pipe 28, and the chamber 27 of iho'rcgcncrator 29, th 29 with a pi el 30 connected to tho 'edudion orifice 31 o n gaa pum? 89, which ump ia connected through ita nduction a gasprodncer, not shown, which in ducer should he of a tyge .capable 01E: al

eratin a a high in h regen and ca la thespiplgi 28, 29 are t a controlling I.["l'ie chamber 27 at the top ofthe le llgenerator 20 is connected through and the chamber 27 at the to oa the al fenerator 22 through a pipe 9` to a pipe 40, eading to the upper fuel lue i4 aiirround ing the fornace, and also thi-on la a brancli pipe 41 to tho lower fuel flue 1 ing the furnace. .tn the pipee 88, 89, and 4t are the controllin valves 48, 4844.

The chamber 23 a the bottom of the air re nerto 2in1 imineetedthrou a i I l r l non: loe .i l

4b, and tho chamber 20 at the bottom air re iterator 23 through a pi 46 to a ipa i, leading from the eductionorilea 5,8 of at. air pump 49. The pipe 47 ia eolinected to the fuel uea 14, 15. In the pim l 45, 46, 47 .are the controlling v'alvu Ihe chamber 27 at the` to of the ail' N- enerator 21 is connected t rough a pi ti, and the. chamber 26 at the to of the a riiencrntoi- 23, throii fh u pipe Mi, lcmlinp to ihn finti lince 14, 15. In t pipes 53, 5- i om tho controlling valveaf5l;,o7.

ol 1o 25 communi u rough a pipe ae surround:`

. as deaired, and au ia iuuuil in rvgenerativo -pump 82 pelea through pipo 80, thence by of the .It will be readily understood that by um.. mpulatin the various eoiitrollin vulves the fuel us 14, 15, may be fed wit heated air, or ith heated gus und nir, or with cold air, or with cdld gas und nir, :is muy he. desired; and further, one or both of the fuel iluea may be operated tui required.

.Situated in thu exit tluo i8 in n hutterrtiy valve o8, and on the outside of ihefurniiee iii a handle 69, by means of which the position of this valve may be changed so as to throw the products of noinhustiii either through the regenerators 2.1, 20, or 23, 22,

lumace operations.

In order to uontrol the. w-innd nir, x-gulating vdvpriire providec for the. pump, The refulpng vulve for the gus puin p consiste o Ldiaphragin (it), which controle u bypaiil Il. [the re lating valve of thu air pump commits o 1i wei rliu-d vulve` 62.,

pump! being old, no tirtht-r doeueription ia neoeiaaiiy.

1n ractioe prefer that the ges be deliv at. a pressure of 1i pounds to the square inch and air at 1 und to the ,square inch, aa in practice it as been demopatrated that if water gaa and air are delittered and mixed at the pressures indicated and than ignited., the resulting temperature Situated on the movable bottom of the furnace 8 ia l carriage 63, throu h which the article to be heated, 64, may )o moved into and out o! the furnace by means of the` hydraulic device 65, U. l and 3. 'In the modicetion ahowu in ig. 5, the article 64 to be heated will be incloiied by a mulilo 69. i

The operation of the furnace will be readily underlined. The gaa delivered by e gas rifeiierator n "i" Mi ""i?" generator o t e i an pi 0 to pipe 40 to fuel up; 14, 15. 'lyhe aire delivared bpump 49 aaaea through pi e 47 to pipe 4 lien up rough tubaa Moi this regeuerator to pi M by pipe 55 to fuel tiuee 14, 15, that ia, auppoetng the various valves are so a to permit the tiow ii and air in the direction iudicatedq This direction 'ia indiritted hy the ioilition uf the valves in the drawing, while t ie pmition of the butterdy vnlt'e 58 indicates tlint the re yeneratorii 20,21, are at the thml being eda by the outgoing products of rombo tion. -After n given time, iuris usuel in regenerative ftirnuces, tho position of the butterfly vulve is changed to divert the outgoing produirts of combustion iiinund the regrnerators 22, 23.v Siniihttly', tito ponition of various vulves will he rhunged to turn the mui unil nir through regeneriitors 20, 2l. Pipes 30 and t0 are vonnefrted l.

gpetothebottomof menus of a pipe (itiivn whii-h is'ii vulve t5 hinted, by manipulating thi.l vulveq. ineludmg the'valvo 4t, in the branch pipe 4l, or valve 68 in fuel tlue 14, the incoming streuim of gus nud nir muy he di livoiei hot. or wild to one ui' the other ui' hotli of the furl lliirs H, l5.

ily ieun'on of liul nti'ui'tvii'i: duwrihvd, :iii ettremvlv high ii'inpt-rnturo muy he 0h tiiined. nin not. `uhlo ut thel present moment to stilte the reasons for the high temperature obtained. Tho prnctieul fact, however, remains that notwithstanding that the gne eniployi-d, which in known iii Dowsoirs gas, isontnimi very few heat. unit, estimated at. 35 'i'. U., :ho teiiifm'nture obtained within the fui'url'u i-i considrrnhly 'higher than vnu im ohtniui-d with thiI richest carbon pm duifer giu-u temperature of from 3,000 t0 -LCtlti logro Fahrenheit can he generited minute. Nido-I. `which requires 3000 degree temperature, him been melted in letali thun ten minutos; wrought iron, which N- quires 2,800 degrees. in lees than three ininutoeuund copper, which requires 800 d in less than one minute. So far as uppli cant van diecover the high temperature appeara to be due to the het that. a ve `Inail. quantity of' ati', lesa than ui usua y. em-

ployed, ia required to promote combuntiglnz l wish it understood that l do not in any wise eonsider it necessary that. I'ehuuld explain. the reasons why the high temperatura is produced, auf?. therefore, do not wish to be lixnitedrto any explanation. Every denver han been made h oarefully con dueted tosts,analyues of t ie gases prior tol ouslyA Thi lutter fui-t is of mui'h prartical value in the oonhtruetiun of furnaces, 'm thut thil opt-virions within the furnace are conducted ro ranidl that vno destruction of the. mills hy the hig temperature produced tnkes pince.v

l wish it. undeiwuood that tho drawinpi iii-voiupui-iyiug tliisvepplieution are hirgey diugruinniutie und intended to illustrate the poum-ul 'ieliitioii of parte employed, thus I may use iiny pi or pump, anv type o! reeneretor, anydirin of connections between t o regenerutor and the furnace. I may lll iso

-for forcing gaseous ucl tirough u heated increase or decrease the size of the pipes. 'llie exit liuc furthe products of combustion i.-: shown in thc drawings ns umch larger l thun would hc rt uircd 1n practice, ns the umnnnt of carbon t ioxid delivered from the furmice is much smullcr than the combined inlnmc of cnrlmn diuxitl und nitrogen usuully ctmt'eycd from such furnace thruughl thc rcgcucrntors. t Having thun lcserilml my invention, I i claim: i Y

l. ln a furnucc structure uml in cumh|- l mttiun willi the combustion clnuuhcr thereof, l

mciuni for delivering uns und nir into aid chamber under pressure und for ellccting' instantaneous combustion therein.

2. In a furnace structure und in comhimxtion with thc combustion cluuubcr thereof, reversible gas und air rcgcucratorx, menus for l forcing gne und nir sepnrutcly through huid numerator, nml menus for unitin v thc tous uml nir ut the combustion chum cr nml elfecting ita instnutnuenun cnmbuhtion therein.

3. In u furnace structure uml in combination with thc combustion chamber thereof,

u puir of gus rcgcncruturs, u mir of air rcgcncrntors,iin-mm for cuunlngt ic products ut combustion to lltcrnutcly lient one 'uir ugent-rotor und mc mi rc renerutur, menus l gus regcncrutor and nir through u h catcd utr rcgcnerutor, nntl means for combining thc hculctl gus and nir ut the combultion chamber uml etlccting its instantaneous combustion therein.

4. In u furnace structure and in combinetiou with the furnace chamber, two sets of fuel burners locuted ut ditl'crcut levels therein, reversible gas and air regenerate mcuns for forcing us and air through lli regcnerators tu uit burners, und menus for controlling thc uctiun of thc burners.

r. lu u furnace structure und in combination with the furnace chamber, burners in uid chamber, mean-i fur fccdin said burn er with hut gus und hut nir un er premature. or hot uir und cold gas under pressure, or cold nir and hot. gas under pressure, or cold gas und cold mr under pressure, as desired.

t. hun furnace structure and in combinetion with thc furnucc chamber, rcvcruible uns und air rcgcuerntors, a gus pump, nn uit' pump, mcuus for rc ulatm the prelsurcs of the gus und uir cliverc from laid pumps, burners in said furnace chemberl, together with vulves for controlling the temperature of the gas and nir delivered, und thc direction of the products of cumhustion through the refonerltors.

In testimony whereo l atx my signature, in thc present-c of two witneuletl.

UERGE lllbblD llNJLllli.

Witnesses:

Fiumi: OCoxnon, Fnunnnlcx A. Bwtnrr.

lib 

